Giant cell arteritis: strategies in diagnosis and treatment

Area of Science:

• Rheumatology
• Immunology
• Vascular Medicine

Background:

• Giant cell arteritis (GCA), also known as temporal arteritis, is a chronic vasculitis affecting large and medium-sized arteries.
• It frequently co-occurs with polymyalgia rheumatica, suggesting a shared underlying vasculitic process.
• GCA presents with diverse symptoms, including recently identified audiovestibular manifestations.

Purpose of the Study:

• To review current diagnostic methods for GCA.
• To summarize established and emerging therapeutic strategies for GCA.
• To highlight the relationship between GCA and polymyalgia rheumatica.

Main Methods:

• Review of recent scientific literature on giant cell arteritis.
• Analysis of diagnostic techniques including imaging (ultrasound, MRI, PET) and temporal artery biopsy.
• Evaluation of current and potential GCA treatments, including corticosteroids and aspirin.

Main Results:

• Temporal artery biopsy remains the gold standard for GCA diagnosis, despite advancements in imaging techniques.
• Audiovestibular symptoms are common in GCA and warrant active clinical investigation.
• Corticosteroids are the primary treatment, but new therapeutic strategies are needed due to delayed effects on inflammation and side effects.

Conclusions:

• Accurate diagnosis of GCA relies on temporal artery biopsy, emphasizing long biopsies and meticulous histological examination.
• While corticosteroids are essential, their limitations necessitate exploration of novel therapeutic agents, such as aspirin.
• Understanding GCA and polymyalgia rheumatica as related expressions of vasculitis is crucial for comprehensive patient management.